Paper-stock-refining machine.



No. 874,844. I PATENTEDDEG. 1'7, 190?.

A. JONES & A. GREGG.

PAPER STOCK REPINING MACHINE.

APPLIOATION FILED AUG. 31, 1907.

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PATENTED DEC. 17, 1907' A. JOZNES & A. GREGG. PAPER STOCK REPINING'MAGHINE.

APPLIGATION FILED AUG. 31, 190 7.

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ARTHUR JONES AND ARTHUR GREGG, OF ROCK FALLS, ILLINOIS.

PAPER-STOGK-REFINING MACHINE.

Specification of Letters Patent.

Patented Dec. 17, 1907'.

Application filed August 31, 1907. Serial No. 390,968,

T 0 all whom it may concern:

Be it known that we, ARTHUR JoNEs, a citizen of Great Britain, residing at Rock Falls, WVhiteside county, Illinois, and ARTHUR GREGG, a citizen of the United States, residing at Rock Falls, in the county of Whiteside and State of Illinois, have invented certain new anduseful Improvements in Paper-Stock- Refining Machines and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accom anying drawings, and to the letters and igures of reference marked thereon, which form a part of this specification.

Our invention has reference to paper stock refining machines, of the kind in general use in the manufacture of paper, wherein the final grinding of the pulp is accomplished.

Similar devices now in use are so constructed that the grinding operation is not distributed equally throughout the machine, but is performed chiefly at one side thereof, forcing the operating mechanism in the opposite direction, and causing an excessive amount of wear thereon. In the operation of our device the action is uniform in all parts thereof, greatly lessening the amount of vibration of the machine, and removing the objectionable features above mentioned.

Among the novel features of our invention are means for preventing the entrance into the machine of foreign matter which would have a tendency to mutilate and destroy the knives of the machine, and of mechanism for adjustment of the grinding parts toward each other.

In the drawings: Figure 1 is a side elevation of our invention. Fig. 2 is a similar view with one half of the shell 3 removed, and other parts in vertical sectionfl Fig. 3 shows the inner face of one of the sections 4. Fig. 4 is a plan view of the plate 9. Fig. 5 is a segmental diagrammatic view, showing a portion of the cylinder 17 and adjacent shell 4, in plan.

Similar numbers refer to similar parts throughout the several figures.

1 represents a base-plate, mounted on legs 2, and secured on said base-plate is a frustum-shaped shell 3, formed of a plurality of sections 4, preferably four in number. The sections 4 are provided at their side edges with outwardly turned flanges 5,

through whichpass bolts 6, by means of which such sections are fastened together. The sections 4 are also provided at their lower edges with flanges 7 and at their upper edges with flanges 8. Fixed to the flange 8 is a plate 9, provided with a plurality of radia openings 10.

Extending centrally of the plates 1 and 9 is a vertical rotary shaft 11, actuated by a bevel-gear wheel 12, supported on a bedplate 13, mounted on the legs 2. wheel 12 is operated by a gear-pinion 14, on a rotary shaft 15, journaled at its inner end in a bearing 16. Power for operating the machine is applied to said shaft 15. The gear-wheel 12 is feathered on the shaft 11 to permit free vertical movement of the shaft therein.

Fixed on the shaft 11 is a cylinder 17, similar in shape to the shell 3, and adapted to rotate therein. The cylinder 17 is provided on its periphery with a plurality of vertical plates or knives 18, and the inner faces of the sections 4 are provided with a plurality of knives 19, disposed in zig-zag fashion thereon. In the rotation of the cylinder 17 the outer edges of the knives 18 pass in close proximity to the knives 19.

Mounted on the shell 3 is a cylinder 20, provided with a hopper 21, and fixed to the upper end of the shaft 11, in the lower part of such cylinder, is a circular plate 22, upon which is mounted a cylindrical shaped screen 23.

Extending downwardly from the bedplate 1 is a boxing 24, in which a step 25 has vertical movement, the lower end of the shaft 11 being supported by such step. Extending downwardly from the step 25 is a threaded stem 26, supported in a similarly threaded opening in a worm-gear wheel 27, supported by a saddle 28 fixed to the lower end of the boxing 24. The gear wheel 27 is actuated by a worm 29 on a rod 30, which is supported at its inner end in a bearing 31 on the saddle 28, and near its outer end in a bearing 32 fixed to one of the legs 2. The outer end of the rod 30 is provided with a hand-wheel 33, by means of which the worm 29 can be operated.

In operation, the shaft 11 is caused to rotate, carrying with it the cylinder 17 and screen 23. A stream of pulp is then fed into the.hopper 21 by any suitable means, the centrifugal force of the movement of the screen forcing the pulp to the outside and The gear through the meshes thereof, from whence it passes downwardly beneath the plate 22 and through the openings '10in'the"-plate 9'. It next passes downwardly between the cyline der 17 and shell 3, the centrifugal force again throwing the stock to the outside of themachine,and between the knives '19. As the pulp passes downwardly between said knives i it is continually ground and beaten by the knives 18, until it isthoroughly- .maceratedg? and in proper condition for use. in paper. of" the quality desired, the stock being finally drawn off from the lower part of the shell 3 through a pipe 34, of which a plurality may be used if desired.

The machine is designed to be constructed of metal throughout, the cylinder 17 being cast in one piece, and having the knives 18 cast therein, such knives being first formed of metal possessing the desired amount of temper. The sections 4 can be similarly produced, with the knives 19 cast therein. Or, if desired, the cylinder 17 and knives 18 can be cast in one operation, of metal possessing a sufficient amount of temper to produce knives of a required degree of hardness. The sections 4 can be similarly produced. A machine thus formed possesses many advantages over those which have heretofore been made partly of wood and partly of metal, in which machines the wood has soon become splintered and disintegrated, and portions thereof found their. way into the stock, destroying the utility thereof. In the former machines, the assembling of the parts was a tedious and laborious piece of work, which is entirely obviated in our device. In replacing the older machines, in case of injury thereto, it was necessary to rebuild the machine, a task requiring several days work, whereas in our device the cylinder 17 or shell 3 can be quickly replaced with the knives complete, with the expenditure of a few hours and limited amount of labor.

In using a certainclass of stock for the manufacture of paper, considerable foreign matter is found therein, of such a character as to injure and frequently disable the refining machine, and the purpose of the screen 23 is to prevent such matter from entering the machine, the same being accumulated in the screen, and easily removed therefrom.

In case the knives 18 are not running sufiiciently close to the knives 19, by operating the worm 29 the shaft 11 and cylinder 17 can be raised, until the knives 18 are brought into a desired proximity to the opposing knives. It is desirable to have the thread on the stem 26 of such a pitch as to cause a gradual adjustment of said parts.

By running the knives 19 vertically of the shell 3, and with angular bends therein, the downward movement of the stock is somewhat retarded, resulting in a more thorough grinding thereof.

reason of the vertical position of the shaft 11, and the support of the cylinder distributed by the screen 23 in all directions bythe rotation thereof, such stock is fed equally on all sides of the cylinder, and the .grindingis performed uniformly on all sides thereof. This prevents any pounding of the knives, and enables themachine to be oper ated. with a considerably less amountof power than has heretofore been required.

It is also obvious that the main operating mechanism is supported on the lower end of the shaft 11, and that the principal amount of wear will be at that point, on the step 25, which can easily be replaced.

What we claim as our invention, and desire to secure by Letters Patent of the United States, is:

1. A device of the class named, comprising a vertical cylinder, provided with a plurality of vertical, spaced-apart knives; a shell, inclosing said cylinder, and provided on its innerface with a plurality of knives, extending longitudinally thereof in a zigzag direction, said last-named knives being in proximity to the knives on said cylinder; and means for rotating said cylinder, substantiallp as shown and set forth.

2. A device of the class named, comprising a shaft vertically mounted therein; a frustum shaped cylinder, fixed 011 said shaft, and provided on its periphery with a plurality of knives, longitudinally thereof; a shell, suitably mounted in said machine, so as to inclose said cylinder, formed of a plurality of sections, detachably secured to one another; a plurality of knives 011 the innerface of said shell, extending from top to bottom thereof in zigzag arrangement and means for rotating said shaft substantially as described.

3. A device of the class named, comprising a vertical shaft, suitably mounted therein; a metal cylinder, fixed on said shaft, and provided on its periphery with a plurality of knives, longitudinally thereof; a metal shell, supported in said machine, so as to inclose said cylinder, and provided with a plurality I of knives on its inner face ext-endin lon itudinally thereof in zigzag arrangement; said shell being formed of a plurality of detachably united sections; means for rotating said shaft, and means for vertically adjusting the same, substantially as shown and described.

4. A device of the class named, comprising a rotary shaft, suitably mounted therein; a cylinder, fixed on said shaft, and provided on its periphery with a plurality of vertically disposed knives; a shell, removably supported in said machine, inclosing said cylinder, and provided on its inner face with a plurality of knives, extending from top to bottom thereof, in zigzag arrangement, said knives being in close proximity to the knives on said cylinder; a rotary screen, fixed to the upper end of said shaft; a cylinder, inclosing said screen, provided with an opening in its upper end, and communicating with the interior of said shell; and means for rotating said shaft, substantially as shown and for the purpose mentioned.

5. In a device of the class named, the combination of a frame; a vertical rotary shaft, supported in said frame, so as to be capable of vertical adjustment therein; a cylinder, fixed on said shaft, and provided on its periphery with a plurality of knives, longitudinally thereof; a stationary sectional shell, inclosing said cylinder, and provided on its inner face with a plurality of knives, in close proximity to the knives on said cylinder;

said knives extending longitudinally of said shell in zigzag arrangement; a cylindrical screen, fixed on the upper end of said shaft'j zo a cylinder, inclosing said screen, and commu- 5 nicating with the interior of said shell, and means for rotating said shaft, substantially as shown and set forth.

In testimony whereof, we affix our signa- 25 tures, in presence of two Witnesses.

ARTHUR JONES. ARTHUR GREGG.

lVitnesses:

AMos VAN DE MARK, W. J. LYNCH. 

